68863816 has 24 divisors (see below), whose sum is σ = 150201270. Its totient is φ = 29512896.

The previous prime is 68863799. The next prime is 68863829. The reversal of 68863816 is 61836886.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46867716 + 21996100 = 6846^2 + 4690^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 87445 + ... + 88228.

Almost surely, 2^68863816 is an apocalyptic number.

It is an amenable number.

68863816 is an abundant number, since it is smaller than the sum of its proper divisors (81337454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68863816 is a wasteful number, since it uses less digits than its factorization.

68863816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175693 (or 175682 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 68863816 is about 8298.4225006925. The cubic root of 68863816 is about 409.8865758030.

The spelling of 68863816 in words is "sixty-eight million, eight hundred sixty-three thousand, eight hundred sixteen".